Suspension for axle-lighting dynamos.



` @M www@ J.- L. wooDBmoGEI SUSPENSION FOR AXLE LIGHTING D-YNA'MOS.

APPLICATION FILED SEPTJO'. I9I6.

2 SHEETS-SHEET I.

Patented May 7, 1918.

J. -L.1 WOODBRI'DGE.

SUSPENSION FOR AXLE LIGHTING DYNAMOS.

. APPLICATION FILED SEPT. 20.. ISIS.

Patented May 7,1918.

2 SHEETS-SHEET 2 LZ2-42522;" Waadra'dyc), I 1mm I (B l :I 4 n.'

JOSEPH LESTER WOOEBEIDGE, OE PHILADELPHIA, PENNSYLVANIA.

SUSPENSION kEOE AxLE-LIGHTING DYNAMOS.

To'aZZ whom t may concern.' l

Beit known that I, JOSEPH LESTER WOOD- BRIDGE, a citizen ofthe United-States, and a resident of Philadelphia, in theStateof Pennsylvania,`have invented certain new y andv useli'ulv Improvements in Suspensionsfor Axle-Lighting Dynamos, of ywhich the following is a specification.

My invention relates to -means for suspending a dynamo electric machinebeneath the body Vof a carfor vehicle from one of whose axles the dynamois driven by means of a'jbelty and suitable pulleys or other similarrmeans for the transmission4 of power. The object of my invention is toprovide simple and inexpensive means for thus suspending the dynamo andat the same time permit the belt tension to be readily and quicklyadjusted and 'to permit. adjusting the position ofthe dynamo tovcompensate for stretch of the belt or for shortening of the belt due tocutting out a defective portionV thereof. 4My invention also provides anovel means for attaching safety chains as well as means `for quicklyclamping the suspension in position after it has been ad-` justed. y i

. These and other objects of the invention will be more clearlyunderstood by reference to the accompanying drawings in which- Fig 3 isa plan view, partly `Figure 1 is a View in elevation, -partlyin section,of a suspension involving ,features of my invention; v Y

Fig 2 is an elevation to an enlarged scale of the clampingv device;

ofthe suspensionshown in Fig. l; and

Fig. 4 is a view to anen'larged scale, partly in section, showing .oneof the safety chains. n

Referring to Figs. 1 and 3, A is a' dynamo suspended from theframe workB, which maybe supported in any Suitable manner fromthe underframe lof acar or other vehicle. C represents the axle of the vehicle on which ismounted a suitable ilanged pulley D, which serves to drive the armatureof the dynamo by means of the Specification Of Letters Iatent.

in section,

Patented May 7, 1918.

`Application led September 2D, 1916. Serial No. 121,170.

armature pulley E and the belt F; the latter being shown broken in orderto condensey the drawing. `The frame of thedynamo is provided with twoupwardly projecting'lugs G, one of which is seen in Fig. 1.v The upperextremities of these lugs are bored to receive a tubular bushing orsleeve H, through which passes a` bearlng pin I.k

The dynamo isffr'ee to swing on this bearing pin, which serves as apivotal support for the dynamo. i

The bearing pin I projects beyond the lugs Gr and the` bushing H and itsprojecting ends are supported in circular openings in the suspensioncarriage J. This suspension carriage, which may be made of suitablematerial, such ascast steel, is in turn sup ported upon the horizontalbars K, which form a part of -the frame Work B. The carriage is free toslide longitudinallv on the barsK, being guided bylongitudinal groovesin the underside of the carriage at the points L, M, and N. The positionof the carriage J on the horizontal bars K may be adjusted by means ofthe adjusting screw O, which passes through an opening P in the framework B and is held in position longitudinally by twok collars Q. Ahandle R attachedto the outer end of the screw may be used for turningthe latter. The screw lits into 'a threaded hole S in the carriage J, soby turning the screw the carriage may be made to slide along thehorizontal bars K in either direction. A tension spring 1 extends from apin 2 attached to the frame of the dynamo to a similar pin 3 attached toa downwardly projecting portion T of the carriage J. The tension of thisspring opposes that of the belt J and determines the belt tension, incombination with a component of the weight of the dynamo when the latteris suspended at an angle with the vertical. If it is desired to increasethe belt tension, the carriage J may be moved by means of the'adjustingscrew O in a direction away'from the axle C. The pin 3 which is attachedto the carriage J will thus be moved to the left (see Fig. 1), whereaslthe pin 2, whichis fixed to the dynamo, can move but slightly onaccount ofk clamping device shown more clearly to a larger scale in Fig.2 by means of which the carriage J may be clamped to the horizontallbars K after its position has been properly adjusted. This clampingdevice consists of a barrel-like portion 5 to which is attached a lobe 6whose weight tends to maintain the Yclamping action. The clamping deviceis pivoted by means of a pin 7 passing through the lowerpportions of aforlelike projection 8 extending downward from the carriage J and loneither side of bar K. The clamping device 4 is free to turn about theaxis of the pin 7.

The surface of the barrel portion of the clamping device perpendicularto the plane of the drawing is cylindrical and is of spiral orothereccentrically curved section except for a iattened portion 9 whichis designed asmshown to permit the clamping device to bereadily placedin position when the flattened portion 9 is parallel to the underside ofthe bar K; upon turning the clamping device in the direction ofthe arrowthe spiral portion of the barrel engages with the under surface of thebar K and by reason of its spiral shape if turned sufficiently inthedirection of the arrow it will clamp the carriage J firmly to the bar.As shown in Fig. 3 one of these clamping devices is arranged on eitherside of the carriage J. `When it is desired to release the carriage atap of a hammer on the lobe G in the direction opposite to the arrowwill instantly release it.

In order to prevent the dynamo from falling to the track in case ofbreakage ot'y the suspending lugs G or the bearing pin, two safetychains are provided, one of which is shown at- 11 in Fig. 1, and is alsoshown to an enlarged scale in Fig.. 4, the l-atter view being taken in aplane at right angles to the bar K. This chain is fastened at one end toan eye bolt y12 in the frame of the dynamo and at the other end issupported by a pin carried by a loop iron 13, which hangs over the barK. The loop iron 13 is free to slide along the bar K and fits looselyinto a recess 14 (Fig. 3) in the suspension carriage so that as thecarriage is moved along the bars K, the loop iron 13 will travel withit. lThis arrangement permits the chain 11 to be made of minimum lengthjust sulfipended from the loop iron.

cient to allow for the swingim1r of the machine about the bearing pinLbbut it is not ynecessary to increase the length of the chain toprovide for various positions of the carriage J along the bars K. It isevidently desirable `that the chain 11 should be as short as possible inorder to limit the amount of energy developed due to thejweight of themachine falling from its normal position to the point where the chainbegins to support its weight.

I do not desire to limit myself to the exact construction shown in thedrawings, as it is obvious that changes may be made without departingfrom the spirit of the invention.

Y What I claim and desire to secure by lLetters Patent is: f 1. Meansforwsuspending a dynamo from ar vehicle comprising a longitudinal bar, acarriage supported by and adjustable along said bar, pivotal supportingmeans for suspending the dynamo from the carriage, projections extendingdownwardly from the carriage on either side of said bar, and a clampingdevice pivoted between said projections and beneath said bar, saiddevice having an eecentrically curved surface adapted, upon rotation ofthe device about its pivotal aXis to clamp the carriage to the bar.

2. Means for suspending a dynamofrom a vehicle comprising a longitudinalbar, a carriage supported by and adjustable along said bar, pivotalsupporting means for suspending the dynamo from the carriage andnormally carrying the weight of the dynamo, a second supporting meanssuspended from the bar normally idle but adapted to support the dynamoin case of failure of its normal support, and means for causing thepoint of suspension of the second supporting means to follow the travelof the carriage along the bar.

3. Means for suspending a dynamo from a vehicle comprising alongitudinalbar, a carriage supported by and adjustable along said bar,pivotal supporting means for suspending the dynamo from the carriage andnormally carrying the `weight of the dynamo, a loop iron fitting looselyover the bar and disposed in a recess of the carriage whereby said loopiron is caused to follow the travel of the carriage along the bar, and asafety chain normally idle but adapted tosupport the dynamo in case offailure of its normal support, said chain being sus- 4. In means forsuspending a dynamo from a vehicle, the combination of a fixed support,a carriage adjustable on the support, a belt driven dynamo suspendedfrom the carriage, and an eccentric clamp interposed between thecarriage and support and tightened by the pull of the belt of thedyprovided with a lobe of .which the weight namo. tends to tighten theclamp. 10

5. In means for suspending a dynamoy In testimony whereof I havehereunto from a vehlcle, the combination of a Xed signed my name.

5 support, a carriage adjustable on the sup- J. LESTER WOODBRIDGE.

port, a belt driven dynamo suspended from IVitnesses: the carriage andan eccentric clamp inter- F. G. BEETERN, posed between the carriage andsupport and R. A. WHETSTONE, Jr.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner ot Patents, Washington, D. C.

